I knew, quite early on, that for- maybe for family reasons, I had no choice but to become a biologist, and the school was very supportive. I was taught by Richard Schardt, who is still a schoolmaster there, and who was the most encouraging and sweet man that you could ever imagine.
Now, why did you know, or think, you had to be a biologist?
Well, it was a sort of family business. My grandfather was a biologist, J. S. Haldane; my uncle, J.B.S. Haldane was another biologist. My two older brothers were turning into biologists, one of them reading medicine, but still, still a biologist.

Avrion Mitchison, the British zoologist, is currently Professor Emeritus at University College London and is best known for his work demonstrating the role of lymphocytes in tumour rejection and for the separate and cooperative roles of T- and B-lymphocytes in this and other processes.

Martin Raff is a Canadian-born neurologist and research biologist who has made important contributions to immunology and cell development. He has a special interest in apoptosis, the phenomenon of cell death.